Vulnerability library
Security checkJanuary 09, 2023

Validation bypass is possible in Json Pattern Validator

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Medium severitynpmjpv

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Description

In jpv (aka Json Pattern Validator) before 2.1.1, compareCommon() can be bypassed because certain internal attributes can be overwritten via a conflicting name, as demonstrated by ‘constructor’: {‘name’:’Array’}. This affects validate(). Hence, a crafted payload can overwrite this builtin attribute to manipulate the type detection result.

Recommendation

Update the jpv package to the latest compatible version. Followings are version details:

  • Affected version(s): < 2.1.1
  • Patched version(s): 2.1.1

References

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See something that needs correcting? Let us knowUpdated January 09, 2023